Helium. Helium was first discovered not on Earth, but in the Sun. Helium is a colorless-looking chemical element with atomic number 2. Physical and Chemical Properties of Group 18 Elements Elements in Group 18 of the Periodic Table are: Helium, Neon, Argon, Krypton, Xenon, Radon These elements are known as noble gases. Helium is a chemical element which is the 2 nd lightest gas after the hydrogen. Find information on Helium including chemical element properties like atomic weight and a list of compounds that contain Helium. It remains liquid down to absolute zero at ordinary pressures, but can be solidified by increasing the pressure. Helium-4 is composed of 2 protons and 2 neutrons. In the modern periodic table, group 18 belongs to noble gases. This group consists of a chemical series of gases including Argon, helium, neon, krypton, xenon, and radon. Many uses of the noble gases are linked to one or more of these properties. Chemical Properties: Chemical Properties of Helium. Helium Page One. Helium Properties. Chemical Inertness. Krypton followed soon after the temperature at these elements to the chemical properties helium atoms. Overview of Helium; Helium's Name in Other Languages; Atomic Structure of Helium; Chemical Properties of Helium This means it is part of a group of six gases – the others are neon, argon, krypton, xenon, and radon – that have certain shared characteristics: they are colorless, odorless, are monatomic (that is, their atoms are not bound to each other) and have extremely low chemically reactive properties. The second lightest element, helium is a colorless, odorless, and tasteless gas that becomes liquid at -268.9 degrees Celsius. Introduction to Physical and Chemical Properties of Noble Gases. Properties: Helium is a very light, inert, colorless gas. Chemical Properties:-Chemical symbol is He-Helium is the least soluble in water than any other gas-Non-Toxic & Non-Flammable in its purest form-Helium is a noble gas. It also contains basic descriptions and applications of both elements. Follow @Atomistry. Chemical Properties Of Helium Laboratory at the team of xenon and chemical properties of all. Look up properties, history, uses, and more. Helium has a very low viscosity, a high diffusion coefficient, and the … The main helium source in the world is a series of fields of natural gas in the United States. Chemical properties of the noble gases. Helium is one of the noble gases of group O in the periodic table. Answer (1 of 7): Helium is an inert gas by nature. It has the lowest boiling and melting points amongst all the elements and is found primarily as a gas. The refractive index of solid and liquid helium is almost the same and it is difficult to distinguish between the two states. Helium is located at position 2 on the periodic table. Helium has chemical properties, as do all elements. Find physical and chemical properties of Helium (He) like element name, symbol, atomic number, atomic weight, density, color, melting point, boiling point, physical state at room temperature, isotopes, compounds, half life period, category, year of discovery and more Five other elements, neon, argon, krypton, xenon, & radon are the other gases that make up the noble gas family on the periodic table. Helium Menu. Most of the people usually know about helium because it the same gas which is filled in partly balloon to make them float. Chemical Properties. The Chemical Properties of Helium 5 He5 and its Potential Usefulness Physical Science Helium is the second lightest element as well as the second most abundant element in the universe (hydrogen has the honor of holding the top spot in both cases). This article contains comparison of key thermal and atomic properties of helium and xenon, two comparable chemical elements from the periodic table. The main helium source in the world is a series of fields of natural gas in the United States. Chemists generally accept the view that helium and the mother members of the group are incapable of entering into chemical combination, but it may serve a purpose to … The hydrogen atom has one proton, one electron, and no neutrons. Helium is a noble gas. Acetone - Thermophysical Properties - Chemical, physical and thermal properties of acetone, also called 2-propanone, dimethyl ketone and pyroacetic acid. Helium has the lowest melting point of any element. As helium is cooled below its transition point, it has an unusual property of superfluidity with a viscosity approaching zero micropoises. The main helium source in the world is a series of fields of natural gas in the United States. Leak Detection. These properties of helium gas make it the atmosphere of choice for many metallurgical processes, growing perfect crystals in chemical vapors, manufacturing optical fibers and other uses. Its most necessary properties are density, melting and high boiling points, state of the masses and atomic matter. Element Helium Neon Argon Krypton Xenon Radon Proton number 2 […] read more Helium Properties Gaseous chemical element, symbol: He, atomic number: 2 and atomic weight 4,0026 g/mol. The Observed Properties of Liquid Helium at the Saturated Vapor Pressure Russell J. Donnellya– and Carlo F. Barenghib– Department of Physics, Cryogenic Helium Turbulence Laboratory, University of Oregon, Eugene, Oregon 97403-1274 The atomic number of helium is 2. Its symbol is He and it belongs to the group of noble gases and its usual state in nature is gaseous. In addition, liquid helium has extremelyhigh thermal conductivity. Characteristics and Properties The specific heat of helium gas is unusually high. Thermal Properties of Helium - He. Helium is a non-toxic, tasteless, non-flammable, odorless, colorless, tasteless, inert, monatomic gas. The chemical symbol of helium is He. Its atoms consist of two protons, two neutrons, and two electrons. It can be noted that helium is non-toxic in small concentrations. The chemical properties of helium are those properties where we investigate the bonds that helium makes with other atoms, either those like itself, or those different. Table shows some physical properties of Group 18 elements. The density is 111.325 kilopascals and … Chemical properties of helium - Health effects of helium. Helium solidifies at -272C at a pressure of 2.5 MPa (25 bar). Thermal properties of materials refer to the response of materials to changes in their temperature and to the application of heat. Just because an element is inert doesn't mean it doesn't have chemical properties - it can be … Properties. Under standard conditions for temperature and pressure (STP), helium exists as a colourless mono atomic gas that does not have any distinct odour or taste. 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